SharedPreferences not working in android 4.2 Jellybean - sharedpreferences

I am using sharedpreferences which working from android 2.2 and android 4.1.1. But , shared preferences stopped working in android 4.2. I am using only android.content.SharedPreferences not preferenceactivity or preferencefragment.
Can anyone explain why it is not working and any alternative solution for this issue ?

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Realm crashes in react-native for android 10?

We have recently updated our react-native project to 0.62.2. To perform the linking we need to update the realm version to 6.0.0. It is working fine on ios but it is crashing on android 10 only. Below android 10 it is also working fine. We have realm version 0f 0.29.2 initially. After that we again degraded the version of realm to 0.29.2 then it is working fine. We have also updated the version above 6 also but the same problem occurs.
How can we update our realm to 6.0.0 or any version above it for android 10?

How to build iOS apps using react- native on window 10

I am new in react-native. I want to build an android and iOS application by using react-native. I used the Windows 10 to build the react-native project and it is ok when I run the android app using Android SDK or real device but cannot on iOS devices. I have researched this problem and know that I need to use macOS to run the iOS apps. Is it possible to build iOS apps using any iOS simulator on Windows 10?
for exporting ios apps you must have a MAC system(X-code) or you can do it in windows with VMvare that have a virtual Mac system ,and in next step you must have a developer account then other steps are simple :)
The best way to develop in react native if you did not have access to MAC OSX environment is to use EXPO as it will ensured the app could run on android and iOS.
The second option would be using private cloud Mac like MacStadium.

Found incompatible Titanium Modules: ti.map , version: 2.0.4

My situation
Apple SDK 7.1
Simulator version 7.1
Titanium SDK 3.3.0G.A
xCode 5.1
Titanium Studio, build: 3.4.0.201409261227
CLI version 3.4.0
Problem with ti.map modules : I try to start the app but I get this error :
I do not understand why now give me this error, I've uploaded an update of my app with the same configuration and I have not had any problems
the ti.map modules requires Titanium SDK > 3.2.0 and xCode > 5
I think you have been hit by an "auto" update.... John Jardin has described a similar issue here: http://johnjardin.ukuvuma.co.za/2014/10/03/appcelerator-fix-ti-map-ios-upgrading-titanium-3-4-0/
Please let me know if it solves your issue?
/John

Configuring Blackberry 10 SDK in Titanium

I have been working on Blackberry 10 Cascades Native SDK. I tried to configure the SDK in Titanium Studio. Though the Titanium Dashboard indicates a green checker and states the SDK installed and configured, when i try to create a new project, the Blackberry SDK check option is still disabled. (Titanium is updated to the latest revisions. Blackberry 10 Native works fine. Simulator is good). Could somebody help?
From Appcelerator site :
To get started developing your app, you can gain access to the public
Titanium Mobile BlackBerry GitHub Repository. Installing the
BlackBerry 10 development tools are straightforward, and instruction
can be found at README. Read the Terms and Conditions for this offer.
Hope this help you..

Issue in installing Android platform 2.2

I am new to titanium, i already set Android sdk its working fine with my eclipse indigo. I mean i can able to launch android 2.2 google api emulator in that IDE. But In titanium it showing error message Items required An Android SDK is missing.Titanium requires Android platform 2.2 I have follow this post Titanium Studio cannot find Android SDK and fixed some path issues. But still i am getting same error. Need guidance to set up environment.